Mold mechanism for glass-working machines



Sept. 3, 1929. R. M. SEARLE MOLD MECHANISM FOR GLASS WORKING MACHINES ["Vv merita@ o b www. 0N ww. o%N,w PQN WN BN om mvww o mwN www QN NWN Aww www J RQ mwN w RNNQN EN; uw N TIQQ mHmC\ NGUM WHEN Y www AWN R. M. SEARLE Sept. 3, 1929.

MOLD MECHANISM FOR GLASS WORKING MACHINES Filed June 3, 1927 4 Sheets-Sheet Inl/enfor Sept. 3, 1929.

MOLD MECHANISM FOR R. M. SEARLE GLASS WORKING MACHINES Sept. 3, 1929. R. M. SEARLE MOLD MECHANISM FOR GLASS WORKING MACHINES Filed June 3. 1927 4 sheets-sheet 4 OWN SN www.

305 which cooperates with. a mold carrier rot-ating rack 306 carried at a proper point along the path of the mold carrying belt.

' The rack 306 has pivoted to it, on its approach end, a picksup rack 307Y (Fig. 26), which is normally pressed into the path of the gears 305 by a spring 308.

As shown in Figs. 4, 5 and 6, the lower end of each mold carrier body 290 has fast thereon a ratchet dise 309, located above the gear 305, and the shaft 293 has keyed thereon a ratchet disc 310 located below the gear 305, a friction drive disc 311 being interposed bctween the gear 305 and the disc 309 and between the gear and the disc 310. so that the shaft or the mold carrier. or both. can be rotated around their common axis by the rota tion of gear 305, dependent on their locked or unlocked condition. In order to place pressure on the friction discs a collar 312 is 'fast on the shaft below the ratchet disc 310. to which it is locked by a pin 313, springs 314 being interposed between the two to prt-ss the disc upwardly on the shaft.

The operation of opening and closing the molds is dependent upon a relative rotation of the shaft 293 and the mold carrier body 290 under the drive of gear 305. which rotation in turn is dependent on the condition of certain locks shown particularly in Figs. 7-12. i

Mounted on a pin 315, projecting from the lower surface of the link body 283, is an upper pawl arm 310 to lock the disc 309 which is fast. on the mold carrier body 290, a lower pawl arm 317 to lock the disc 310 which is keyed to the shaft 293, and a cam arm 31S intermediate of the pawl arms and acting as a common drive, with a loose connection, for the two arms.

The normal osition of the parts is one in which the molt halves are open to their maximum and the mold carrier body is in such angular position in the link body that the mold halves are on opposite sides of the plane in which the mold carrier moves. the mold carrier body being held in this position against. the frictional drive exerted from the gear 305 by the ends of the mold actuating racks 298 contacting with lugs 319 upon the top'of the link body 283 (Fig. 13). At this time the molds are held open because rotation of their actuating gear 294 is prevented b v the engagement of a bit 320 earried by the lower paw] arm 317 with av ratchet insert, 321 in the lower ratchet disc 310. It'.

during this position of the parts` the gear 305 is in engagement with the rack 300, the friction drives will slip.

On its outer end cam arm 318 carries a roller by which the arm is rocked when the roller, in the travel of tht` individual mold mechanism contacts with a mold closing cani 323. which is adjustable longitudinally of the machine. ll'ith tht.` parts in thc normal position shown in Fig. 7, it will be .seen that movement of arm 31S rocks. through a compression spring 324. the upper pawl arm 310, and a bit 325 carried h v it moves into engagement with a ratchet insert 320 carried by the plate ratchet disc 309. thuwplacing the parts in the position shown in Fig. b. in which the mold carrier body. in addition to the lock against rotation due to the lugs 319, is also locked by the upper pawl arm 310.

As roller 322 rides further onto Cam 323, the further rocking of cam arm 318 causes a lug 32T carried thereby to strike the lower pawl arm 31T and rock it until its bit 320 discngagcs the lower ratchetv disc 310 as shown in Fig. Sl. the pawlarm being caught. Q0

in thc discngagiiig position by a spring-controlled latch 32S.

During thc time required for thc transition from thtl position .shown in Fig. 3 to that .shown in Fig. fl thc mold rotating gear 30:3 starts the rotation of pinion ratchet disc 310. thus sliding tlnA raclts 20S to start closing mold sections IB02 and 303. and breaks the lock at lugs 310. roller 322 continues to ridt` on thc straight portion otl cam 323 the closing of thtI molds will bc completed.

ll'hcu thc roller 322 runs oli` cam 323 it is returned to itsnormal position by a spring 320 (Fig. 4) and. by the engagement of a lug 330 on its` carrying arm 313 with a lug 331 on the upper pa\vl arm 31o (Fig. 5). rock.s the latter against a .stop 32"2 to discngagc it from thc ratchet disc 309 (Fig. tu).

As both locks against rotation of thc mold carrier bodv arc now broken. thc mold 280 is rotated, by llnl continui-d engagement of gear 305 with rack 300. thc gcar 201 rotating with the mold carrier bod'v.` This continues for a .suitable period until thtmold reaches a predctcrmined point in its travel. when the latch 32S strilt'cs a mold opening cani 333 (Figs. 2 and ll). adiit-tabiju mounted adjacent to the path ot the mechanism, and is moved to reinas-c the lowi-r patvl arm 31T, thus allowing thi` latter to be ioclwd hv its spring 335 (Fig, Vt) to its normal position of engagement with pinion ratchet disc 310, as shown in Fig. l2. 'this loclts pinion ratch et. disc 310 but. as plabl ratchet 30S) is still unlocked. the mold carrier body is now rotated in rcs'pcct to gear 291. This causes a rotative movement. the rtw erst of their prior relative movemcnts when thtl mold carrier bodyv 290 was locked and the .shaft 293 free, and the conscqncnt opening of the mold sections 302 and 303, and the movement of the racks outwardly sufficient to enable their ends to contact with lugs 319 on link body member 283, at which time the parts will again be in normal position.

The inserts 326 and 321 are preferably, as shown, duplicated on the ratchet discs 309 and 310 at diametrically opposite points to reduce unnecessary rotation of the parts.

What is claimed is:

1. The combination with a rotating mem ber carrying separable mold parts which rotate therewith, a member rota-table in respect to the first named member, a friction drive for each of said members, locks for holding each of said members against rotation, and means for opening and closing the mold parts by the relative rotation of the members.

2. In a mold mechanism, the combination with a rotating mold carrier, a member carried thereby and rotatable in respect to the mold carrier, means for closing and opening the molds on the relative movement of the carrier and member, an independent friction drive from a common drive for the carrier and member, and a lock for each of the last named parts.

3. The combination with a rotating moldcarrying member, separable mold parts mounted thereon which rotate therewith, a member carried by the mold-carrying inember and rotatable in resl'iect thereto, means for rotating each of said members and holding the other against rotation, means for opening' and closing the mold parts by the relative rotation of the members, and means for rotating both members together.

Hi. The combination with a travelling mold unit, a mold carrier rotatably mounted in said unit and carrying scparabic molds, a mold parts closing actuator also rotatably mounted in the mold unit, a member n'iounted on the mold unit and rotated by the travel of such 1 unit` friction drives between said rotatingy member and the mold carrier and moid actu ator, independent locks for the mold carrier and for the mold actuator, and means con trolled by the travel oi the meid unit actuating said iocks.-

5. The combination of a travelling mold unit having mounted for independent rotation thereon a mold carrier, a mold actuator and a common driving element for the two, the drive being actuated by the travel of the unit, independent friction drives between the driving element and the mold carrier and the mold actuator, independent locks for the mold actuator and the mold carrier, and means for normally maintaining the actuator with the moldsopen, means actuated on the travel of the mold unit to release said lock and to engage the lock of the mold carrier, whereby the molds are closed by the rotation of the actuator in respect to the mold carrier and without rotation of the mold, and to then disengage the lock of the mold carrier whereby the molds are rotated in closed position, and to then restore the locking parts to initial position to lock the mold actuator, whereby the molds will be opened by the rotation of the mold carrier in respect to the actuator.

6. The combination of a travelling mold unit having mounted for independent rotation thereon a mold carrier, a mold actuator and a common driving element for the two, the drive being actuated by the travel of the unit, independent friction drives between the driving element and the mold carrier and the mold actuator, independent locks for the mold actuator and the mold carrier, means for normally maintaining the actuator locked with the molds open, means actuated on the travel of the mold unit to release said lock and to en gage the ock of the mold carrier, whereby the molds are closed by the rotation ot the actuator in respect to the mold carrier and withu out rotation of ythe mold, and to then disengage the lock of the mold carrier whereby the molds are rotated in closed position, and 'to then restore the locking parts to initial posi tion to lock the mold actuator, whereby the molds will be opened by the rotation of the mold carrier in respect to the actuator, and means for arresting the rotation of the mold carrier when the molds are opened and on op posite sides of the line of travel of the mold carrier.

RUSSELL M. SEARLE. 

